[PATCH] Fix hardcoded cpu=0 in workqueue for per_cpu_ptr() calls

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Tracked this down on an Ultra Enterprise 3000.  It's a 6-way machine.  Odd
thing about this machine (and it's good for finding bugs like this) is that
the CPU id's are not 0 based.  For instance, on my machine the CPU's are
6/7/10/11/14/15.

This caused some NULL pointer dereference in kernel/workqueue.c because for
single_threaded workqueue's, it hardcoded the cpu to 0.

I changed the 0's to any_online_cpu(cpu_online_mask), which cpumask.h
claims is "First cpu in mask".  So this fits the same usage.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

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Ben Collins 2005-11-28 13:43:56 -08:00 • committed by Linus Torvalds

parent ee500f2749

commit bce61dd49d

1 changed files with 6 additions and 6 deletions

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kernel/workqueue.c

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